80559570697 has 2 divisors, whose sum is σ = 80559570698. Its totient is φ = 80559570696.

The previous prime is 80559570673. The next prime is 80559570703. The reversal of 80559570697 is 79607595508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67182566416 + 13377004281 = 259196^2 + 115659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80559570697 is a prime.

It is not a weakly prime, because it can be changed into another prime (80559870697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40279785348 + 40279785349.

It is an arithmetic number, because the mean of its divisors is an integer number (40279785349).

Almost surely, 2^80559570697 is an apocalyptic number.

It is an amenable number.

80559570697 is a deficient number, since it is larger than the sum of its proper divisors (1).

80559570697 is an equidigital number, since it uses as much as digits as its factorization.

80559570697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814000, while the sum is 61.

The spelling of 80559570697 in words is "eighty billion, five hundred fifty-nine million, five hundred seventy thousand, six hundred ninety-seven".